{"id":2111,"date":"2013-08-31T12:36:40","date_gmt":"2013-08-31T04:36:40","guid":{"rendered":"http:\/\/kuki.idv.tw\/?p=2111"},"modified":"2013-08-31T12:36:40","modified_gmt":"2013-08-31T04:36:40","slug":"%e9%9d%9e%e5%8e%9f%e5%89%b5%e5%bf%ab%e9%96%83%e8%a8%98%e6%86%b6%e9%ab%94-slc-%e8%88%87-mlc-%e7%9a%84%e5%b7%ae%e5%88%a5","status":"publish","type":"post","link":"https:\/\/www.kuki.idv.tw\/?p=2111","title":{"rendered":"[\u975e\u539f\u5275]\u5feb\u9583\u8a18\u61b6\u9ad4 SLC \u8207 MLC \u7684\u5dee\u5225"},"content":{"rendered":"

\u539f\u5275:\u00a0\u5feb\u9583\u8a18\u61b6\u9ad4 SLC \u8207 MLC \u7684\u5dee\u5225<\/a><\/h1>\n
\u6700\u8fd1\u597d\u50cf\u592a\u5e38\u78b0\u5230\u9019\u500b\u554f\u984c\u4e86, \u5c31\u5beb\u4e00\u7bc7\u6587\u653e\u8457, \u4e0b\u6b21\u518d\u9047\u5230\u4eba\u554f\u5c31\u4e1f\u9019\u7bc7\u7684URL\u7d66\u4ed6\u770b.<\/p>\n
\u9996\u5148\u9084\u662f\u5f97\u5148\u4f86\u4e00\u4e9b\u95dc\u65bc\u5feb\u9583(flash)\u8a18\u61b6\u9ad4\u7684\u9810\u5099\u5e38\u8b58:<\/p>\n

\u5feb\u9583\u8a18\u61b6\u9ad4\u7684\u7528\u9014\u76ee\u524d\u6700\u5e38\u898b\u7684\u5c31\u662f: \u8a18\u61b6\u5361 (\u4f60\u7684\u6578\u4f4d\u76f8\u6a5f\u5728\u7528\u7684), \u96a8\u8eab\u789f, \u4ee5\u53ca SSD (\u56fa\u614b\u78c1\u789f\u6a5f).
\n\u4f9d\u5176\u8a18\u61b6\u55ae\u5143\u7684\u5132\u5b58\u6280\u8853, \u53ef\u5206\u70ba:
\nSLC: Single-Level Cell, \u4e00\u500b\u8a18\u61b6\u55ae\u5143\u53ea\u5b58\u653e\u4e00\u500b\u4f4d\u5143 (\u5169\u500b\u72c0\u614b)
\nMLC: Multi-Level Cell, \u4e00\u500b\u55ae\u5143\u53ef\u4ee5\u5b58\u653e\u591a\u500b\u96fb\u4f4d\u72c0\u614b, \u4ee5 2 bits \u70ba\u4f8b\u5c31\u662f 00, 01, 10, 11 \u56db\u500b\u72c0\u614b, \u5982\u6b64\u4e00\u4f86\u5132\u5b58\u5bc6\u5ea6\u8f03 SLC \u9ad8, \u6210\u672c\u8f03\u4f4e, \u4f46\u901f\u5ea6\u5c31\u6162\u591a\u4e86 <— \u6211\u5011\u4e0d\u8981\u592a\u6df1\u7a76\u70ba\u4ec0\u9ebc, \u90a3\u662f\u5b78\u96fb\u5b50\u7684\u4eba\u624d\u8981\u53bb\u95dc\u5fc3\u7684\u4e8b…\u6211\u5011\u66ab\u6642\u53ea\u9700\u77e5\u9053\u7247\u9762\u7684\u7d50\u8ad6\u5c31\u597d.\u00a0\u8b80\u5b8c\u9019\u4e00\u9ede, \u4f60\u5df2\u7d93\u77e5\u9053 SLC\/MLC \u4e0d\u662f\u724c\u5b50\u7684\u540d\u7a31, \u800c\u662f\u4e0d\u540c\u7684\u6280\u8853\u540d\u8a5e.<\/span><\/p>\n

SLC \u7684\u58fd\u547d\u70ba 100,000 \u6b21\u7684\u8b80\u5beb
\nMLC \u7684\u58fd\u547d\u70ba 10,000 \u6b21\u7684\u8b80\u5beb
\n\u662f\u7684, \u4ee5\u540c\u5bb9\u91cf\u7684 SLC \u8207 MLC \u96a8\u8eab\u789f\u76f8\u6bd4, MLC \u7684\u50f9\u683c\u5927\u7d04\u624d\u56db\u5206\u4e4b\u4e00, \u4f46\u58fd\u547d\u53ea\u6709\u5341\u5206\u4e4b\u4e00<\/span><\/p>\n

Wear-leveling (\u640d\u8017\u5e73\u5747) \u6280\u8853:
\n\u4e0d\u7ba1\u662f SLC \u6216 MLC \u90fd\u6709\u58fd\u547d\u4e0a\u7684\u554f\u984c, \u6240\u4ee5\u5982\u679c\u6709\u4e9b\u8a18\u61b6\u55ae\u5143\u592a\u5e38\u88ab\u8b80\u53d6, \u5c31\u6703\u6bd4\u5176\u4ed6\u8a18\u61b6\u55ae\u5143\u65e9\u5f88\u591a\u6b65\u5f80\u751f\u6b78\u897f. wear-leveling \u5c31\u662f\u8981\u60f3\u8fa6\u6cd5\u5077\u5077\u5e6b\u4f60\u642c\u5bb6, \u5e73\u5747\u7528\u6389\u9019\u4e9b\u8a18\u61b6\u55ae\u5143\u7684\u58fd\u547d.\u00a0\u4f8b\u5982\u4f60\u5bb6\u6a13\u4e0b\u6709\u5341\u500b\u4fe1\u7bb1\u7b52, \u6709\u4e09\u500b\u6700\u5e38\u88ab\u4f7f\u7528, \u6015\u8aaa\u58de\u5f97\u6bd4\u8f03\u5feb…\u6a13\u4e0b\u7ba1\u7406\u54e1\u5c31\u5728\u534a\u591c\u5077\u5077\u5730\u628a\u53e6\u5916\u5e7e\u4e4e\u6c92\u5728\u7528\u7684\u4e09\u6236\u7684\u4fe1\u7bb1\u7b52\u6389\u5305…\u5927\u6982\u5c31\u662f\u9019\u6a23\u7684\u6982\u5ff5\u4e86.<\/span>\u00a0\u7b49\u7b49, wear-leveling \u7576\u7136\u662f\u63a7\u5236\u6676\u7247 (\u6a13\u4e0b\u7ba1\u7406\u54e1) \u5728\u7ba1\u7684\u5566, \u4f60\u6709\u770b\u904e\u4fe1\u7bb1 (\u8a18\u61b6\u55ae\u5143) \u6703\u81ea\u5df1\u642c\u5bb6\u7684\u55ce? \u8b80\u5230\u9019\u88cf, \u4f60\u61c9\u8a72\u66f4\u6709\u6982\u5ff5\u4e86: \u4e00\u96bb 16G MLC \u96a8\u8eab\u789f\u7684\u58fd\u547d, \u4e0d\u662f\u4e00\u96bb\u8b80\u5beb\u4e00\u842c\u6b21\u5c31\u5b8c\u86cb\u4e86, \u800c\u662f [\u7406\u60f3\u4e0a] \u6709 16GB*10000 \u9019\u9ebc\u9577\u547d; \u89c0\u5ff5\u4e0d\u5728\u6b21\u6578, \u800c\u5728\u7e3d\u8cc7\u6599\u6d41\u91cf. 160000GB \u7684\u8cc7\u6599\u6d41\u91cf, \u7d66\u4f60\u4e09\u5e74\u7684\u6642\u9593\u7576\u5206\u6bcd\u597d\u4e86, \u5168\u5e74\u7121\u4f11\u5730\u5929\u5929\u62f7\u4f86\u62f7\u53bb, \u4e00\u5929 146GB \u8036!<\/p>\n

\u591a\u901a\u9053\u8b80\u5beb:
\n\u985e\u4f3c\u7684\u540d\u8a5e\u9019\u5e7e\u5e74\u6bd4\u8f03\u5e38\u898b\u65bc\u4e3b\u6a5f\u677f: \u96d9\u901a\u9053\u8a18\u61b6\u9ad4. \u5169\u689dRAM\u540c\u6642\u6293\u53d6\u8cc7\u6599, \u5728\u76f8\u540c\u6642\u9593\u5167\u6293\u5230\u7684\u8cc7\u6599\u91cf\u81ea\u7136\u5c31\u662f\u55ae\u689d\u7684\u5169\u500d (\u5ee2\u8a71). \u76f8\u540c\u7684\u89c0\u5ff5, \u4e00\u6a23\u53ef\u4ee5\u7528\u5728\u5feb\u9583\u8a18\u61b6\u9ad4\u7684\u63a7\u5236\u6676\u7247\u8a2d\u8a08. MLC \u6bd4 SLC \u6162\u9019\u500b\u5e38\u8b58\u9019\u6211\u5011\u525b\u525b\u77e5\u9053\u4e86, \u4f46 “\u591a\u901a\u9053 MLC \u8b80\u5beb” \u5c31\u53ef\u4ee5\u548c “\u55ae\u901a\u9053 SLC \u8b80\u5beb” \u4e00\u8f03\u9577\u77ed\u4e86… \u6c7a\u52dd\u9ede\u5c31\u5728\u65bc\u63a7\u5236\u6676\u7247. \u7576\u7136…\u63a7\u5236\u6676\u7247\u672c\u8eab\u4e5f\u662f\u6210\u672c\u4e4b\u4e00, \u641e\u5f97\u6108\u8907\u96dc\u5c31\u6108\u8cb4.<\/p>\n

\u4e0d\u662f\u6280\u8853\u963f\u5b85\u7684\u4eba\u53ef\u80fd\u770b\u5230\u9019\u88cf\u5c31\u5df2\u7d93\u6c92\u8010\u6027\u518d\u770b\u4e0b\u53bb\u4e86 (\u6211\u6709\u9810\u5148\u505a\u904e reader’s test \u4e86\u54c8\u54c8)… \u5e78\u597d\u4f60\u5927\u6982\u4e5f\u53ea\u9700\u8981\u77e5\u9053\u9019\u9ebc\u591a\u5566. \u63a5\u4e0b\u4f86\u5c31\u662f case study \u4e86.<\/span><\/p>\n

\u76ee\u524d (2008\u5e7411\u6708) \u5e02\u552e\u5df2\u7d93\u7f55\u6709 SLC \u7684\u96a8\u8eab\u789f\u4e86. \u5275\u898b JF168 16G (SLC) \u7684\u8981\u50f9\u56db\u5343\u591a\u584a. \u800c 16G MLC \u96a8\u8eab\u789f\u6eff\u8857\u90fd\u662f, \u6700\u666e\u901a\u7684\u5927\u6982\u4e00\u5343\u5143\u4e0a\u4e0b, \u800c\u50cf\u6211\u8cb7\u7684 Corsair Voyager GT 16G \u5247\u662f\u4e00\u5343\u516b\u5de6\u53f3, \u901f\u5ea6\u4ecd\u7565\u905c\u65bc SLC \u7684\u96a8\u8eab\u789f.<\/p>\n

\u5982\u679c\u4f60\u6bd4\u8f03\u5728\u610f “\u5beb\u5165\u901f\u5ea6”, \u52a0\u4e0a\u4f60\u771f\u7684\u6bd4\u5225\u4eba\u5e38\u5e38\u5728\u7528\u96a8\u8eab\u789f\u642c\u5927\u91cf\u8cc7\u6599 (\u4f8b\u5982\u5f71\u97f3\u5716\u6a94\u4ec0\u9ebc\u7684), \u90a3\u4f60\u53ef\u80fd\u5f97\u591a\u82b1\u9ede\u9322\u6295\u8cc7\u8cfc\u8cb7 SLC \u7684\u96a8\u8eab\u789f. \u9019\u4e26\u4e0d\u662f\u58fd\u547d\u4e0a\u7684\u8003\u91cf. \u5982\u540c\u6211\u524d\u4e00\u7bc7\u6587\u5beb\u904e\u7684, \u9664\u975e\u4f60\u4e00\u5929\u6709 146G \u7684\u8cc7\u6599\u642c\u79fb\u91cf (\u4e0d\u7ba1\u662f\u8b80\u6216\u5beb), \u4e0d\u7136 MLC 16G \u7684\u96a8\u8eab\u789f\u61c9\u8a72\u5920\u9577\u547d\u6490\u5230\u4f60\u5acc\u5b83\u592a\u5c0f\u800c\u8cb7\u4e00\u96bb\u5927\u4e86\u516b\u500d\u5341\u516d\u500d\u7684\u65b0\u54c1 (\u5c46\u6642\u50f9\u9322\u53ef\u80fd\u4e5f\u4e00\u6a23\u5728\u5169\u5343\u584a\u4ee5\u4e0b). MLC \u7684\u53e6\u4e00\u500b\u5c0f\u554f\u984c\u5c31 “\u5beb\u5165\u6bd4\u8f03\u6709\u5361\u5361\u7684\u611f\u89ba”, \u4e0d\u82e5 SLC \u90a3\u9ebc\u9806\u66a2, \u5c24\u5176\u7576\u4f60\u6709\u4e00\u5806\u5927\u5927\u5c0f\u5c0f\u7684\u6a94\u6848\u8981\u5beb\u4f86\u5beb\u53bb\u7684\u6642\u5019<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\u539f\u5275:\u00a0\u5feb\u9583\u8a18\u61b6\u9ad4 SLC \u8207 MLC \u7684\u5dee\u5225 \u6700\u8fd1\u597d\u50cf\u592a\u5e38\u78b0\u5230\u9019\u500b\u554f\u984c\u4e86, \u5c31\u5beb\u4e00\u7bc7\u6587\u653e\u8457, \u4e0b\u6b21\u518d\u9047\u5230\u4eba\u554f … \u95b1\u8b80\u5168\u6587\u3008[\u975e\u539f\u5275]\u5feb\u9583\u8a18\u61b6\u9ad4 SLC \u8207 MLC \u7684\u5dee\u5225\u3009<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/2111"}],"collection":[{"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2111"}],"version-history":[{"count":2,"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/2111\/revisions"}],"predecessor-version":[{"id":2113,"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/2111\/revisions\/2113"}],"wp:attachment":[{"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kuki.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}